Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2009-0846

Severity CVSS v4.0:
Pending analysis
Type:
CWE-824 Access of Uninitialized Pointer
Publication date:
09/04/2009
Last modified:
09/04/2025

Description

The asn1_decode_generaltime function in lib/krb5/asn.1/asn1_decode.c in the ASN.1 GeneralizedTime decoder in MIT Kerberos 5 (aka krb5) before 1.6.4 allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via vectors involving an invalid DER encoding that triggers a free of an uninitialized pointer.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 10.00 HIGH
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
10.00
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:* 1.6.4 (excluding)
cpe:2.3:o:fedoraproject:fedora:9:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:6.06:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:7.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:8.10:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* 10.5.7 (excluding)
cpe:2.3:o:redhat:enterprise_linux:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:3.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:4.7:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:2.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:3.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:4.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools